20052547372321 has 4 divisors (see below), whose sum is σ = 20054921306112. Its totient is φ = 20050173438532.

The previous prime is 20052547372303. The next prime is 20052547372327. The reversal of 20052547372321 is 12327374525002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20052547372321 - 2³³ = 20043957437729 is a prime.

It is a super-2 number, since 2×20052547372321² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20052547372327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1186954225 + ... + 1186971118.

It is an arithmetic number, because the mean of its divisors is an integer number (5013730326528).

Almost surely, 2^{20052547372321} is an apocalyptic number.

It is an amenable number.

20052547372321 is a deficient number, since it is larger than the sum of its proper divisors (2373933791).

20052547372321 is an equidigital number, since it uses as much as digits as its factorization.

20052547372321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2373933790.

The product of its (nonzero) digits is 705600, while the sum is 43.

The spelling of 20052547372321 in words is "twenty trillion, fifty-two billion, five hundred forty-seven million, three hundred seventy-two thousand, three hundred twenty-one".